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Daily lowest cross-dealer premium per product, computed nightly at 01:00 UTC from hourly dealer scrapes filtered to in-stock offers with premium ≥ -2% (sanity floor).","license":"CC-BY-4.0","temporalCoverage":{"start":"2026-04-19","end":"2026-05-10"},"dealerCount":10,"productCount":150,"products":[{"slug":"buffalo-2024","name":"2024 American Gold Buffalo 1 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Gold Eagle 1/4 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Gold Kangaroo 1/10 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Gold Bar 1/10 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Silver Britannia 1 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Silver Bar 1 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Silver Bar 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Silver Bar 100 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Silver Bar 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Silver Bar 10 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Silver Bar 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Silver Bar 1 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Silver Bar 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Silver Bar 5 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